Young people in Singapore and China may need a break from all the time they’re spending online.

Associated Press Apple fans entertain themselves with iPads and iPhones while waiting in queue to purchase the iPad 3 in Singapore during its launch in March. A recent survey of youths between the ages of 19 and 26 in Singapore, China and the U.S. by advertising agency JWT found that more than half find it too demanding to keep up with their activities on Facebook, Twitter and the like. Managing their commitments on the social networks – which were designed in part to ease communication between people – is now becoming a chore, according to the survey’s results.

In China, nearly two thirds of those surveyed said they felt pressure to be in constant contact with various social media sites – most notably Qzone, weibo (microblogs) and Ren Ren – with 58% saying that this obligation to social media is stressful. More than half said that this stress has increased from just a year ago.

The Chinese market is one of the most robust in the world for social media, and according to a survey by McKinsey released last month, 91% of Chinese respondents said they visited a social media site in the last six months.

Additionally, the JWT survey found that conversations on social media often permeate spill over into the real world, with 73% in Singapore and 81% in China saying it was important to keep up with social media activity since it is discussed in face-to-face conversations.

In Singapore, where smartphone penetration is the highest in the world at 55%, according to go-globe.com, young adults are most inclined to visit social networking sites when out and while waiting – as well as in the bedroom. One in ten people surveyed admitted to visiting a social networking site while being intimate with a partner, and 17% have used social networking while on a date.

The expected Facebook bounce for the social media stocks has not yet materialized. I suspect that the cold light of transparency that accompanies the registration process has undercut some of the mystique surrounding Facebook's business model. Perhaps there will be a bounce post-IPO.

Shares of Renren ( RENN), sometimes called The Facebook of China, are up 12 cents, or 2%, at $5.61 in late trading after the company this evening reported Q1 revenue that topped analysts’ expectations and a smaller-than-expected net loss per share in line with estimates, but projected the current quarter’s sales below consensus.

Revenue in the three months ended in March rose 56%, year over year, to $32.1 million, yielding a net loss of 3 cents.

Analysts had been modeling $29.7 million and a 4-cent loss, according to FactSet.

For the current quarter, the company sees revenue of $41 million to $43 million, versus the consensus $45.9 million.

CEO Joseph Chen said the quarter proved the value of the company’s multiple income sources, with gaming revenue offsetting weakness in advertising revenue amidst a slowdown in China.

“Our brand advertising business experienced a challenging quarter due to seasonality and Chinese economy slow-down, resulting in a more cautious approach by new advertisers on our social networking platform,” said Chen.